You cannot tell a lie, or at least, you cannot tell a lie that sounds like a lie, although you wish you could. The honesty of the Rooster/Sagittarius, though greatly valued by others (especially your adversaries), is the bane of your existence. Luckily, you are a bundle of incurable typical Sagittarian optimism, so this doesn't bother you as much as it would a different DoubleSign. Try to figure out the mannered anodyne of the "white lie" -- it'll spare your relationships many an unintentional headache.
Be sure to separate the water from the oil when it comes to doling out charity, and give of your Roosterian plenitude only to the truly needy, otherwise word will make the rounds and they'll come from far and wide to drag you and your giving nature down into the depths with them, which will severely hamper your ability to remain cheerful.